Distinguishing localization from chaos: Challenges in finite-size systems

DA Abanin, JH Bardarson, G De Tomasi… - Annals of Physics, 2021 - Elsevier
We re-examine attempts to study the many-body localization transition using measures that
are physically natural on the ergodic/quantum chaotic regime of the phase diagram. Using …

Multifractal scalings across the many-body localization transition

N Macé, F Alet, N Laflorencie - Physical review letters, 2019 - APS
In contrast with Anderson localization where a genuine localization is observed in real
space, the many-body localization (MBL) problem is much less understood in Hilbert space …

Phenomenology of the prethermal many-body localized regime

DM Long, PJD Crowley, V Khemani, A Chandran - Physical Review Letters, 2023 - APS
The dynamical phase diagram of interacting disordered systems has seen substantial
revision over the past few years. Theory must now account for a large prethermal many-body …

From Anderson localization on random regular graphs to many-body localization

KS Tikhonov, AD Mirlin - Annals of Physics, 2021 - Elsevier
The article reviews the physics of Anderson localization on random regular graphs (RRG)
and its connections to many-body localization (MBL) in disordered interacting systems …

Rare thermal bubbles at the many-body localization transition from the Fock space point of view

G De Tomasi, IM Khaymovich, F Pollmann, S Warzel - Physical Review B, 2021 - APS
In this paper we study the many-body localization (MBL) transition and relate it to the
eigenstate structure in the Fock space. Besides the standard entanglement and multifractal …

Fragile extended phases in the log-normal Rosenzweig-Porter model

IM Khaymovich, VE Kravtsov, BL Altshuler… - Physical Review …, 2020 - APS
In this paper, we suggest an extension of the Rosenzweig-Porter (RP) model, the LN-RP
model, in which the off-diagonal matrix elements have a wide, log-normal distribution. We …

Statistics of eigenstates near the localization transition on random regular graphs

KS Tikhonov, AD Mirlin - Physical Review B, 2019 - APS
Dynamical and spatial correlations of eigenfunctions as well as energy level correlations in
the Anderson model on random regular graphs (RRG) are studied. We consider the critical …

Multifractal dimensions for random matrices, chaotic quantum maps, and many-body systems

A Bäcker, M Haque, IM Khaymovich - Physical Review E, 2019 - APS
Multifractal dimensions allow for characterizing the localization properties of states in
complex quantum systems. For ergodic states the finite-size versions of fractal dimensions …